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H. L. BALSOYN. BRICK MACHINE.

No. 494,911. Patented Apr. 4, 1893.

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No. 494,911. Patented Apr. 4,' 1893.

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BRICK MACHINE.

No. 494,911. Patented Apr. 4, 1898.

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PATENT Trice.

HARRY L. BALSON, OF ST. LOUIS, MISSOURI.

BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 494,911, dated April 4,1893.

Application filed December 8, 1892. Serial No. 454,507. (No model.)

To @ZZ whom it may concern:

Be it known that I, HARRY L. BALsoN, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inBrick-Machines, of which the following is a full, clear,-and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to certain improvements in brick machines, and myinvention consists in features of novelty hereinafter fully describedand `poin ted out in the claims.

Figure I is aside elevation of myimproved machine. Fig. II is avertical, longitudinal section, taken on line II--II, Fig. III. Fig. IIIis a front elevation. Fig. IV is a vertical, transverse section, takenon line IV-IV, Fig. I. Fig. V is a rear elevation. Fig. VI is ahorizontal section, taken on line VI--VI, Fig. III; and Fig. VII is asimilar view, taken on line VIL-VII, Fig. III.

Referring to the drawingsz-l represents the bed plate of the machine, 2represents the table, 3 the mold, et the hopper, 5 the charger, 6 thelower plunger, and 7 the upper plunger of the machine.

8 is the main shaft, to which a suitable motor is connected, andwhichiisgeared into large cam wheels 9.

10 are arms, pivoted at 1l to the standards 12, which support thecounter-shaft 13 upon which the cam wheels 9 are mounted. The arms 10are connected by jointed links 14 to the charger the joints of the links14 being pivoted to the frame 15 of the machine by arms 16, as shown inFigs. I and VI. The arms carry pins or projections 17, which may bearmed with friction rollers, and which are engaged by cams 18 on thewheels 9 to force the charger forward. The cams 18 are provided withgrooves 19 to receive the pins or projections 17, and itwill beunderstood that after the charger is forced forward, and the point 17 ofthe cams 1S pass the pins or projections 17, the outer walls 19L of thecams, will, by bearing against the pins or projections 17 retract thecharger and bring it back to its original position. A positive movementof the charger is thus obtained in The upper plunger 7 moves eachdirection.

vertically in suitable guides 20, as usual, and is connected by togglelinks 21 to the head of a lever 22, pivoted at 23 to the standards 24 ofthe frame of the press. The lever 22 has a hea-(125 to the lower end ofwhich the toggle 21 is connected, as shown in Fig. Il. The lower plunger6 moves vertically in suitable guides 2G. It is connected by links 27 tothe upper end of the head 25 of the lever 22, the links being made fastto the head by means of a rod 2S, and being made fast to the lowerplunger by means of a rod 29; the links 27 having slots 27a throughwhich the rod 29 passes, so that the lower plunger is capable ot beingmoved independently of the links 27 2S are links between the rod 2S andthe pivot rod 23 of the lever 22, (see Figs. I, III and IV.) These linksstrengthen and support the rod 2S, and as their center is the same asthe center of thelever 22, they do not interfere with the movement ofthe parts. The lever 22 is oscillated on its pivot 23 by a crank 3lsecured to the shaft 13, (see Fig. 1,) the crank being connected to theend of the lever 22 by a link 32. The toggle 21 is connected by a linkor pitman 34 to the upper end 35 of a lever, which is pivoted at 36 tothe frame 15, the lower end 87 of the lever being provided with lateralprojections 3S, fitting in cam grooves 39 in the wheels 9, (see Fig.II.) y

When the machine is set in motion, the rst action is to force thecharger 5 forward and retract it, the clay droppinginto the mold. Thetoggle 21 is next straightened or brought into the position shown bydotted lines, Fig. II,

through means of the cam 39,1ever 35,37, and

pitman 34. This produces a quick movement of the upper plunger, for theinitial pressing, the lower plunger remaining at rest, and forming, asusual, the bottom of the mold. By the time that the toggle 21isstraightened, the outer end of the lever 22 commences to descend,causing a further downward movement, under heavy pressure, of the upperplunger, and causing at the same time, an upward movement of the lowerplunger,through means of the described construction. The next action ofthe press is to move the lever 22, back to its normal position,withdrawing the upper plunger slowly from the mold. On

IOO

or before the arrival of thelever 22 to its normal position, the toggle21 is broken again and forced into the position shown by full lines,Fig. II, thus imparting a rapid upper movement to the upper plunger. Asthe upper plunger isthus ascending, the lower plunger is following itup, this movement being permitted by the slots 27a in the links or rods27, and this movement being imparted through means of leversy 40, (seeFigs. I, II and VIL) which are pivoted at 4l, and the inner ends ofwhich bearbeneath the lower plunger 6, the other ends of the leversbeing provided with pins or projections which may be armed with frictionrollers, which fit in cam grooves 42 in the lwheels 9. The parts are sodisposed that thelevcrs will commence to move as the up per plungercommences to recede. The levers 40 cause the lower plunger to be movedupward a sufcicnt distance to eject the brick from the mold and at thistime the charger 5 advances again, and moves the brick onto the table 2,the levers 40 then moving back to their normal position, and the lowerplunger receding to its normal position, and thus the operation goes oncontinuously.

To prevent danger of the lower plunger sticking in the mold, and notreceding to its lower position, I employ dash-pots 43, (see Fig. IV.,)the pistons 44 of the dash-pots being secured to and projecting upwardlyfrom the base of the machine, and the cylinders 45 of the dash-potsbeing secured to and projecting downwardly from the rod 29 of the lowerplunger. As the lower plunger ascends a vacuum is created in thedash-pots, which exerts its force to draw the plunger back to its normalposition, when the levers 40 recede to their normal position.

To regulate the descent of the lower plunger, and thus regulate thedepth of the mold,

I employ a wedge 46 sliding on the base l of the machine beneath theplunger, as shown in Fig. II. This wedge 46 is traversed by a threadedrod 46a havin g bevel gearconnection 47 with the shaft 48, which hasbevel gear connection 49 with a vertical shaft 50, provided..

with a hand Wheel 5l, (see Figs. I and II.) By turning the hand-wheelthe wedge can be moved in and out to regulate the ascent of the lowerplunger, as stated.

In Fig. VII, I have shown two wedges 46, but it is evident that only onewedge need be used.

In Figs. III and IV I have shown two toggles 21 connected by the samepin or rod 2la to the lever 22, and connected by the same pin or rod tothe pitman 34 and to the upper plunger.

I claim as my inventionl. In brick machine, the combination of aplunger, a toggle pivoted by one end to the plunger, a pivoted leverl towhich the other end of the toggle is pivoted, means for moving thelever, a pivoted lever to which the center of the toggle is connected,and means for moving said latter lever; substantially as and for thepurpose set forth.

2. In a brick machine, the combination of the upper and lower plungers,apivoted lever provided with a head, means for moving the lever, atoggle connecting the upper pitman to the head of the lever on one sideof the pivot, mechanism for imparting pressure to the joint of saidtoggle, and a connection between the lower plunger and said lever on theother 'side of the pivot; substantially as and for the purpose setforth.

3. In a brick machine, the combination of the upper and lower plungers,a pivoted lever, `a toggle connecting the upper plunger to said lever onVone side of the pivot, mechanism for imparting pressure tothe joint ofsaid toggle, a connection between the lower plunger and said lever onthe other side of the pivot, pivoted levers 40 and means for moving saidlatter levers; substantially as and for the purpose set forth.

HARRY L. BALSON.

In presence of- ALBERT M. EBEnsoLE,

3D. S. KNiGHT.

